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POAngular pagination reverse jumping
 

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  1. POAngular pagination reverse jumping
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    <p>I have this table:</p> <p><img src="https://i.stack.imgur.com/LmZfw.png" alt="enter image description here"></p> <p>Here is a code and <kbd><a href="http://jsfiddle.net/SAWsA/891/" rel="nofollow noreferrer">Fiddle</a></kbd>:</p> <p><strong>HTML</strong></p> <pre><code>&lt;table class="table table-striped table-condensed table-hover"&gt; &lt;thead&gt; &lt;tr&gt; &lt;th class="id"&gt;Id&amp;nbsp;&lt;a ng-click="sort_by('id')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;th class="name"&gt;Name&amp;nbsp;&lt;a ng-click="sort_by('name')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;th class="description"&gt;Description&amp;nbsp;&lt;a ng-click="sort_by('description')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;th class="field3"&gt;Field 3&amp;nbsp;&lt;a ng-click="sort_by('field3')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;th class="field4"&gt;Field 4&amp;nbsp;&lt;a ng-click="sort_by('field4')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;th class="field5"&gt;Field 5&amp;nbsp;&lt;a ng-click="sort_by('field5')"&gt;&lt;i class="icon-sort"&gt;&lt;/i&gt;&lt;/a&gt;&lt;/th&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tfoot&gt; &lt;td colspan="6"&gt; &lt;div class="pagination pull-right"&gt; &lt;ul&gt; &lt;li ng-class="{disabled: currentPage == 0}"&gt; &lt;a href ng-click="prevPage()"&gt;« Prev&lt;/a&gt; &lt;/li&gt; &lt;li ng-repeat="n in range(pagedItems.length, currentPage, currentPage + gap) " ng-class="{active: n == currentPage}" ng-click="setPage()"&gt; &lt;a href ng-bind="n + 1"&gt;1&lt;/a&gt; &lt;/li&gt; &lt;li ng-class="{disabled: (currentPage) == pagedItems.length - 1}"&gt; &lt;a href ng-click="nextPage()"&gt;Next »&lt;/a&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tfoot&gt; &lt;pre&gt;pagedItems.length: {{pagedItems.length|json}}&lt;/pre&gt; &lt;pre&gt;currentPage: {{currentPage|json}}&lt;/pre&gt; &lt;tbody&gt; &lt;tr ng-repeat="item in pagedItems[currentPage] | orderBy:sortingOrder:reverse"&gt; &lt;td&gt;{{item.id}}&lt;/td&gt; &lt;td&gt;{{item.name}}&lt;/td&gt; &lt;td&gt;{{item.description}}&lt;/td&gt; &lt;td&gt;{{item.field3}}&lt;/td&gt; &lt;td&gt;{{item.field4}}&lt;/td&gt; &lt;td&gt;{{item.field5}}&lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; </code></pre> <p><strong>JS</strong></p> <pre><code>function ctrlRead($scope, $filter) { // init $scope.sortingOrder = 'name'; $scope.gap = 5; $scope.cached = 0; $scope.reverse = false; $scope.filteredItems = []; $scope.groupedItems = []; $scope.itemsPerPage = 5; $scope.pagedItems = []; $scope.currentPage = 0; $scope.items = [ {"id":1,"name":"name 1","description":"description 1","field3":"field3 1","field4":"field4 1","field5 ":"field5 1"}, {"id":2,"name":"name 2","description":"description 1","field3":"field3 2","field4":"field4 2","field5 ":"field5 2"}, //.... ]; var searchMatch = function (haystack, needle) { if (!needle) { return true; } return haystack.toLowerCase().indexOf(needle.toLowerCase()) !== -1; }; // init the filtered items $scope.search = function () { $scope.filteredItems = $filter('filter')($scope.items, function (item) { for(var attr in item) { if (searchMatch(item[attr], $scope.query)) return true; } return false; }); // take care of the sorting order if ($scope.sortingOrder !== '') { $scope.filteredItems = $filter('orderBy')($scope.filteredItems, $scope.sortingOrder, $scope.reverse); } $scope.currentPage = 0; // now group by pages $scope.groupToPages(); }; // calculate page in place $scope.groupToPages = function () { $scope.pagedItems = []; for (var i = 0; i &lt; $scope.filteredItems.length; i++) { if (i % $scope.itemsPerPage === 0) { $scope.pagedItems[Math.floor(i / $scope.itemsPerPage)] = [ $scope.filteredItems[i] ]; } else { $scope.pagedItems[Math.floor(i / $scope.itemsPerPage)].push($scope.filteredItems[i]); } } }; $scope.range = function (size,start, end) { if( $scope.cached == start){ start = start - 4; console.log('start',start); } $scope.cached = start; var ret = []; console.log(size,start, end); if(size &lt; 2){return ret;} if (size &lt; end) { end = size; start = size-$scope.gap; } for (var i = start; i &lt; end; i++) { if(i&lt;0) continue; ret.push(i); } console.log(ret); return ret; }; $scope.prevPage = function () { if ($scope.currentPage &gt; 0) { $scope.currentPage--; } }; $scope.nextPage = function () { if ($scope.currentPage &lt; $scope.pagedItems.length - 1) { $scope.currentPage++; } }; $scope.setPage = function () { $scope.currentPage = this.n; }; // functions have been describe process the data for display $scope.search(); // change sorting order $scope.sort_by = function(newSortingOrder) { if ($scope.sortingOrder == newSortingOrder) $scope.reverse = !$scope.reverse; $scope.sortingOrder = newSortingOrder; }; }; ctrlRead.$inject = ['$scope', '$filter']; </code></pre> <p>From the code you can see that we have 13 groups of 5 rows.</p> <p>If I press in pagination on 5, the <code>5</code> button jumps to 1st place and last place is <code>9</code>. </p> <p>By this way I can "travel" quickly over all data.</p> <p>My problem that I don't know how to make it wok to jump back a.e reverse.</p> <p>For example if I stay on 13:</p> <p><img src="https://i.stack.imgur.com/RVm5z.png" alt="enter image description here"></p> <p>and I press on <code>9</code> I expect that <code>9</code> will jump to the end of pagination and 1st element in list will be <code>5</code>.</p> <p>How to achieve that?</p> <p>Thank you,</p>
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